Clip-on heat sink



FIG. 1 is a perspective view of a heat sink according to the invention;

FIG. 2 is a side view of the heat sink of FIG. 1;

FIG. 3 is a rear view of the heat sink of FIG. 1;

FIG. 4 is a front view of the heat sink of FIG. 1;

FIG. 5 is a top view of the heat sink of FIG. 1; and,

FIG. 6 is a bottom view of the heat sink of FIG. 1.

The broken lines shown in FIGS. 1-4 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a "clip-on heat sink", as shown and described above. 